Elemental Jar

You throw a small clay jar filled with magically charged oil at a creature that you can see within range. You slot a piece of charcoal, a small copper rod, or a shard of ice into the oil to deal Fire, Lightning, or Cold damage and then make a ranged spell attack against the target. If the attack hits, the creature takes 2d8 damage of the type you chose. the Jar breaks on impact, and any creature within melee range of the target must make a DEX save to avoid getting hit by the splash. any creature that fails takes half damage from the spreading oil a successful save gives no damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.